Last week, I went to the Computer History Museum in Mountain View, CA, to celebrate the [launch of K9 Ventures](http://www.k9ventures.com/2010/06/friends-of-k9-event/). I spent most of my time socializing with various friends of K9, but I did take the time to snap a few photos of the Difference Engine they have on display. It is an incredible work of functional art. I'm told that the Computer History Museum gives demos of it in action -- something I'd love to see.